The analysis of the risks of the firedamp leakage at the Ostrava-Karvina mine district

The article deals with the method of the safety risks analysis related to the methane leakage from the underground. The method uses the simplicity of the index method and the demands and the accuracy of the French MOSAR method as well. The MOSAR method is a system and systematic complex direction to work out the risk analysis. The analysis of the possible risks falls into fundamental ideas of the method namely the systematic sequence. The method sense is calculated the possible transfers of some danger. The index methods take advantage of the objective evaluation of the real danger related to the methane leakage from the underground. The main objective of the method is a reduction of the probability of the contingency beginning related to the methane leakage from underground and of the reduction of the impact of the contingency; it means the risk management. (authors)